Spectrum Analysis of Spreading & Dispreading in WCDMA-3G

How Spreading & Dispreading in WCDMA-3G ? Traditional radio communication systems transmit data using the minimum bandwidth required to carry it as a narrowband signal. CDMA system mix their input...
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Spectrum Analysis of Spreading & Dispreading in WCDMA-3G, Spectrum Analysis, radio, communication, systems, transmit datacdma, cdma spreading, data, dispreading, receiver, spectrum, spreading, spreading bandwidth, system, telecom, transmit, wcdma spread, wcdma spreading

SC-FDMA Receiver Benefits in LTE

DFT spreading of modulation symbols reduces PAPR In OFDM, each modulation symbols “sees” a single 15 kHz subcarrier (flat channel) In SC-FD-A, each modulation symbol “sees” a wider bandwidth (i.e....
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SC-FDMA Receiver, sc-fdmafdma, lte, ofdm, receiver, sc fdma, subcarrier, telecom, uplink


If some knowledge of the downlink channels of the different transmit antennas, (more specifically some knowledge of the relative channel phases) is available at the transmitter side, multiple transmit antennas...
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BEAMFORMING in LTEantenna, beamforming, channels, downlink, lte, pn, receiver, signal, telecom, transmit

Propagation Path

Radio wave can be propagated from the transmitting antenna to the receiving antenna in many ways: perpendicular incidence wave or ground refraction wave, diffraction wave, troposphere reflection wave, ionosphere reflection...
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Propagation Path, troposphere, wave, reflection, ionosphere, diffraction, signalantenna, apn, cell, diffraction, ground, hlr, pn, radio, receiver, reflectionwave, telecom, vlr, wave

Propagation of Electromagnetic Wave

When the radio wave propagates in the air, the electric field direction changes regularly. If the electric field direction of radio wave is vertical to the ground, the radio wave...
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Propagation of Electromagnetic Waveantenna, diffraction, ground, lte electromagnetic wave, pn, radio, receiver, reflectionwave, telecom, wave

Radio Wave Spectrum

The radio waves are distributed in 3Hz ~ 3000GHz. This spectrum is divided into 12 bands, as shown in the above table. The frequencies in each specific band present unique...
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mobile communication, frequency, system, coverageantenna, apn, diffraction, epc, pn, radio, rake, receiver, reflectionwave, vlr, wave

Receiver Design for LTE

The main objective of the study is to take action for the entire measurement receiver. However, many factors can affect the performance of the receiver, such sub-blocks of receipt must...
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Receiver Design for LTE, Open and closed loop operation, lte receivers, division duplex, lte design, receiver, testing receiver, design receiver, lte modelslte basic receiver, lte mimo, mimo, rake receiver cdma, rake receiver invented in, receiver

Receiver sensitivity and Uplink Losses for GSM

Receiver sensitivity is the ability of the receiver to receive signals in the sense that any signal below the sensitivity is considered as noise and is not usable. Receiver sensitivity...
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mobile antenna gain, receiver sensitivity, body loss, sensitivity, receiver, antenna, noisegsm, hlr, receiver, rho, uplink, uplink losses in gsm, vlr

Inter-Carrier Interference for OFDM

The price for the optimum subcarrier spacing is the sensitivity of OFDM to frequency errors. If the receiver’s frequency is some fractions of the subcarrier spacing (subcarrier bandwidth) then we...
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cost, frequency, interference, ofdma, ppm, receiver, signal, subcarrier, telecom, transmitter

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